I just used DBI and timb as an example. I actually tried loads of modules and cpan users which didn't seem to produce any results e.g., DBIx-Log4perl, DBD-ODBC, mjevans which are the obvious ones (me) but as you say some work e.g., DBD-Oracle.
I also sometimes get failures:
$ p5u testers DBD::ODBC
Failed to retrieve URI http://www.cpantesters.org/distro/D/DBD-ODBC.js
martin@bragi:~$ p5u testers DBD::ODBC
CPAN Testers results for DBD-ODBC version 1.38_3
PASS FAIL ETC
Perl 5.012 4 0 0
Perl 5.014 2 0 0
but they could be something here so I will look into that.